An ice-ocean coupled model
An ice model, an ocean model, and a method of coupling the models are described. The ice model is a synthesis, with variations and extensions, of previous modeling ideas. Ice thickness, concentra-tion, velocity, and internal energy are prognostic variables. The ice thermodynamics are represented by...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Text |
| Language: | English |
| Published: |
1989
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| Subjects: | |
| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.571.8934 http://www.gfdl.noaa.gov/bibliography/related_files/glm8901.pdf?PHPSESSID=6c42c9c382bbc0835c7543cc39597a38 |
| Summary: | An ice model, an ocean model, and a method of coupling the models are described. The ice model is a synthesis, with variations and extensions, of previous modeling ideas. Ice thickness, concentra-tion, velocity, and internal energy are prognostic variables. The ice thermodynamics are represented by temperatures at the snow surface, ice surface, the interior, and the bottom surface. Melting and freezing rates are calculated at the ice-atmosphere, ice-ocean, and atmosphere-ocean interfaces. A prescribed portion of summer meltwater can be stored on the surface and refrozen in the fall. The ocean model includes a second moment, turbulence closure submodel and enables one to solve for oceanic heat flux, the interfacial stress, and subsurface properties. In this paper the model is applied to one-dimensional simulations, but the equations are cited in a form for implementation by two- and three-dimensional models. In a companion paper (Kantha and Mellor, this issue) the model is used for two-dimensional (vertical plane) simulations in the Bering Sea. Several one-dimensional sensitivity studies are performed in the case where the ice model is decoupled from the ocean; here the oceanic heat flux and sea surface temperature are prescribed constants. The studies reveal the role and sensitivity of surface trapped meltwater, ice concentration, and ice divergence. With the coupled ice-ocean model, the seasonally varying oceanic heat flux and mixed layer properties are determined |
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